(1) What is chemBlink?
chemBlink.com is a website registered in North Carolina, USA. We specialize as an online chemical database, and provide free information about chemical products from suppliers to the public. The submitted information to the database is manually reviewed and verified by chemists and updated every other week. As of Spring 2014, chemBlink has a database of 380,000 products and 5,200 suppliers, and is the top search result on Google for most of our chemicals. Therefore, we also have a large customer base that browse our listings daily, with total daily visits of more than 400,000 hits, and millions of page impressions per month.
(2) What services does chemBlink provide?
A free information resource of properties of chemicals, including chemical name, chemical formula, molecular structure, CAS registration number, basic chemical and physical properties, safety data as well as suppliers information.
Free advertising program of chemical products by text-based standard linking. Up to 50 products can be submitted by each supplier to create text-based links on chemical supplier pages.
Free online inquiring system and free inquire mail forwarding service.
Forum of free registration for discussing wide topics in academic and chemical industrial communities, such as information exchange, marketing and other chemistry related topics.
Premium Linking program offers advanced services for promoting chemical products by an affordable cost.
Massive Linking is a trading company oriented program. With less costs it is a suitable choice for import / export companies or chemical dealers.
Banner and logo advertisements for wide range of chemical products.
(3) How to contact chemBlink?
chemBlink provides online support 24/7. You may reach us through the following links:
Business contact: http://www.chemblink.com/contact.htm
Product submission: http://www.chemblink.com/submit.htm
Error correction / Spam reporting: http://www.chemblink.com/spam.htm
You can also reach us by phone:
+1 (888) 735-4568 (from USA/Canada, toll free, 7 a.m. - 10 p.m. EST)
+1 (919) 272-8304 (from other areas, 7 a.m. - 10 p.m. EST)
+86 (021) 6482-3006 / 6482-3008 (service in Chinese)
Or by fax:
+1 (919) 324-6628
+86 (021) 5186-2856
(4) What if I am unable to access your web page?
chemBlink.com is hosted in a dedicated web server. Its uptime is almost 100%. If chemBlink is doing routine maintenance, there may be in rare circumstances a brief delay or website downtime. Please be patient while we upgrade our servers so that your product and database browsing experience can be maximized.
(5) What if I see unreadable text or a blank page instead of the chemBlink website?
chemBlink uses UTF-8 character set as the default format so this should not happen. Please be sure that your browser is set up to read UTF-8 which should be the default on most browsers.
Supplier Registration and Product Submission
(1) How do I register as a supplier in order to post free standard links?
Every supplier may submit up to 50 products as free standard links on the submission page. The first time you submit a product you must register as a supplier. chemBlink will show the number of free standard links that your company has already submitted on the submission confirmation page.
(2) How do I update existing or submitted product links?
To remove products, please send the list of products to be removed to chemBlink. We suggest to delete all products and to re-submit if the list is too long., please consult us by email.
(3) How do I know which products are already listed on chemBlink?
Please send email to us to inquire a detailed list of all listed products of your company.
(4) As a customer with standard links, how do I update the information about my company after I have already finished registration?
Please use the following links and select Updating as Submission Type:
Or contact us by phone (see How to contact chemBlink?)
(5) How do I submit products for premium links or massive links?
You must contact us (see How to contact chemBlink?), sign contract and submit the list of products to be linked.
(6) As a customer with premium links, how do I update the information about my company after I have already finished registration?
You may log in your account from the following links and modify by yourself:
(7) How long does it take a free standard link to appear on the listings after being submitted?
chemBlink does not guarantee a timeframe for standard links to appear. It can be from one day to months.
(8) How long does it take a premium link or a massive link to appear on the listings after being submitted?
From the time the product is submitted as a premium link and the fee is collected, it will be listed within 24 hours. For the massive links, it will take 3 work days.
(9) Is it normal if a submitted product only appears with its name and no other information?
If the submitted product does not exist in the database, our experts will collect, review and create data file for the product. The process will complete in 10 work days. The full information will be online in the next update.
(10) We submitted our company information but cannot find it in your database.
If you only submitted supplier information but have not submitted any products yet, your company will not appear. You must have at least one product to be listed as a supplier.
(11) We submitted a standard link, but cannot find the product in your database.
Submitted chemical products do not immediately get linked, but will require verification. A standard link can delay from a day to a couple of months for verification.
(12) Will 100% of my submitted products as standard links be successfully listed?
chemBlink will only list products that are also listed on your company's website and verified by our experts. You may submit your important and hot products as premium links, which chemBlink guarantees to list within 24 hours.
(13) If I get a message that says "Your company has already submitted 50 products", what should I do?
Currently the limit of free standard links for one company is 50. You may remove or replace your submitted products, or contact chemBlink to submit more products as premium links or massive links (see How to contact chemBlink?)
(14) If I get a message that says "Form could not be processed due to a temporary system error", what should I do?
Mostly, you might have submitted products with incorrect contexts. Please check submitted contents, such email address, etc.
(15) What is the difference between premium links and standard links?
What is the difference between premium links and standard links?
All suppliers of a product are listed on the product page as text links (standard links) pointing to suppliers' company pages on chemBlink. If there are no suppliers using premium linking for this product, visitors can submit inquiries to all suppliers by using Express Inquiry button or online inquiry form. However, if some suppliers have purchased the Premium Linking service for this product, only hyperlinks of these suppliers (premium links) are posted on the top part of the product page. Visitors can submit inquiry directly to these suppliers, while other suppliers, who have not purchased the paid service, will be invisible. Visitors can access them only by using the "More Suppliers..." link pointing to product supplier pages. Because buyers and premium suppliers can do business directly on product page, a premium link will bring more customers to premium supplier. Moreover, a premium supplier is always listed above standard suppliers on a product page where the premium supplier submitted the product as standard link.
(16) What should I do after the first year of registration?
As one of chemBlink's suppliers a company can submit up to 50 products as Standard links for free of charge after registration. During the first membership year the company has been familiar with chemBlink's services. From the second membership year we encourage suppliers to select chemBlink's advanced services to promote their most competitive products and to obtain the qualification of using up to 300 free standard links.
(17) Since chemBlink is open source, why do you still charge a fee?
chemBlink's primary purpose is to provide free information of products to the public. Its primary product promotion program, Standard Linking, is also free of charge. For additional services such as premium links, a small fee is charged to cover maintenance costs such as servers, licenses, and workforce.
(18) If I get a message that says "You submitted xxxx-xx-x, which is a product with Premium Linking.", what should I do?
chemBlink offers the free advertisement plan (Standard Linking) and the paid service (Premium Lining) to customers. If your submitted products are already listed as Premium products (that is, other suppliers have paid for the text link ads of these products), these suppliers will be displayed on the top part of the product page and receive inquiries submitted by buyers directly form the product page. Your company will be listed among the standard supplier list on the lower part of the product page. There is no inquiry facilities available to submit inquiry directly from the page. You can ignore the message. However, you may consider to submit the product as Premium link for better service. See "(15) What is the difference between premium links and standard links?".
(19) What is CAS Filter?
The CAS numbers that you try to submit may be invalid (that is, they do not properly consist of numbers defined by CAS's formula) or already submitted as Premium links (that is, other suppliers have paid for text link ads of these products). Although the system will inform you when you submit them, it is annoying if there are many such CAS numbers in your submission. The CAS Filter enables you to find all invalid or unallowable CAS numbers by one click. The link of CAS Filter can be found on the submission page.
(20) Who is a Premium supplier?
Premium supplier is the chemical supplier who has participated in chemBlink's Premium Linking program. Similarily, standard supplier refers to the chemical suppliers who has participated in the Standard Linking Program, while massive supplier is the supplier who has joined in the Massive Linking Program. As an online chemicals database and search engine, chemBlink has no authorization to determine the qualifications of a company as a chemicals supplier. It is the supplier itself who must take full legal responsibility for its services and product quality. However, chemBlink accepts the challenge of constraining its member suppliers with common business regulations and morals by asking members to provide their company's information and business licenses. Members must sign contracts promising to provide quality services and products and prevent fake advertising. Being a Premium Supplier means that they are qualified to obtain chemBlink's advanced services. chemBlink uses various means to protect buyers by tracking inquiries, providing fraud / spam reporting systems, and allowing rating of suppliers. chemBlink will never be involved in business disputes between buyers and suppliers, but will provide a platform for communication and coordination. If a supplier is repeatedly reported for fraud is proven, its submitted products and information will immediately be eliminated. We welcome more suppliers to participate in chemBlink's Premium Linking and other advanced programs, which is a mechanism beneficial to both purchasers and suppliers.
(21) Do you accept credit cards for online payment?
Yes. You can pay your invoice online by using most popular credit cards, debit cards or PayPal accounts. Please see details in this document.
chemBlink's Information Policy
(1) Direct interaction between buyers and suppliers through chemBlink
If there is a button on a product page, it can be used to directly contact with the suppliers of that product. Otherwise, visitors may click on the link located under the heading List of Suppliers to open the supplier listing page, from where an individual supplier can be contacted through online mail or by phone / fax.
(2) How do I respond to inquiries about products?
If you receive an inquiry to a product through chemBlink, please contact the buyer directly. Please do not reply to chemBlink. chemBlink is not involved in business of any listed companies.
(3) Can I use chemBlink's pages and resources as my own?
chemBlink.com is the intellectual property of chemBlink Inc. chemBlink® is the service mark registered in the USA and other countries. Infringement of whole or part of the website is in violation of US and international copyright laws and will be faced legal action from chemBlink. chemBlink welcomes use of its materials by colleagues of academic and industrial communities provided permission is given, or the following are mentioned in their works:
Author: chemBlink Inc.
We suggest using the Harvard Citation Format for website document. For example, if you want to use the web page of Formaldehyde, you may reference chemBlink Inc. as the following:
Source: http://www.chemblink.com (or specific pages)
chemBlink Inc. (2011). Formaldehyde. [Online]. March 2011. Available from: http://www.chemblink.com/products/50-00-0.htm. [Accessed: 26th March 2011]
(4) How do I use the CAS number provided by chemBlink?
chemBlink has a license to use the CAS registry number, which is the property of the CAS. You are allowed to use the number provided as long as it remains within the regulations of the CAS (see http://cas.org/legal/infopolicy.html).
(5) How do I use the chemical structures provided by chemBlink?
All chemical structures on chemBlink are the property of chemBlink Inc. and are protected under US and international copyright laws. You may use these structures on a small scale for educational or research purposes provided credit is given, or author / source are mentioned. For usage of 1,000 or more chemical structures, please contact chemBlink to be provided with a license.